Chuck



Patentd net l3, 193iv luru'rlizli STATES-"f @FFME emanen e. mnwmm, or BRISTOL, cONNEc'rrcU'r, AssIGNOr. TO'4 man rum am ING COMPANY, Or Naw BRITAIN, OONNEOTIOUT, a CORPORATION or oONNnc'rIoU'r ammenda med omberiz, 1929. smal no.' 399,134'.

This invention relates to a diaphragm chuck.

One of the main objects of the invention is' to provide a chuck for holding a plurality of work pieces accurately in a predetermlned transversely. The diaphragm is preferably iiexed out of its normal position by means located centrally' relatively thereto so that when said diaphragm is flexed in one direction, the ljawsv will move outwardly and when exed in the Opposite direction, the jaws will move inwardly.

In the drawings, I have shown one form of the invention, this form being of the type `adapted to receive and hold at least two work pieces-on the outer sides of the jaws, the same identical principle, however, being equally'- available for gripping work pieces between or inside of the jaws, that belng a mere reversal of the articular form I have shown and will descrlbe.

In the drawin Fig. 1 is a longitudinal section of my imiproved diaphragm chuck indicating two work pieces gripped by said diaphragm and in position for operations thereon;

Fig. 2 is an end elevation of the part shown l in Fig. .1 looking from right to left' Fig. 3 is a cross-section on the plane of the line 3-3 of Fig. 1, the diaphragm being omitted.

1 represents the body or base of the chuck. 2 is a face-plate mounted thereon and firmly connected thereto as by any suitable means such as by screws 3. The body 1 and the faceplate 2 each have a central assage for a plunger 4. Mounted on the ace-plate 2 is a diaphragm 5, the same being secured thereto in any desirable way as by screws The plunger 4 is suitably. connected with the diav phragm. In the present instance, thisconnection is ei'ected by means of a screw 7 which passes throu h a central aperture in the dia-v screws into the end of the plunger 4. The diaphragm is provided with gripping jaws, in the present disclosure shown as being formed separate from the diaphragm. Clearly, suchjaws could be made inte al with the diaphragm. 8 is the base ring of what I will term the jaw body. This jaw body is secured to the centralpart of the diaphragm by screws 9-9. The central part. of the body projects outwardly to form jaws' (in this instance six innumber), comprising two concentric sets, oneset of jaws being indicated by the numerals 10-10-10, the other set being `indicated by thel numerals 10- 10M-10th Each of the jaws is preferably provided with a positioning shoulder 11 against which one work piece rests when in operative osition. 12-13 indicate two work pieces.

n this instance, the work pieces may be assumed to be ball bearing rings upon each of operation is to be perindicated by the numerals 101--10-108L will engage the secondwork piece 13. This I accomplish by cutting down slightly the alternate jaws of each set underneath or back of the position forthe respective work pieces or rings. For example, the jaws 10a, which are to` ip the ring 13, are cut down at 14 back o the position for the ring 12 so that the presence of the ring 12 on its set of jaws `will not interfere with 'the gripping movement of the jaws for said ring 13. The set of jaws 10, which are to tgrip the ring 12, are cut down at 15 back o the position for the ring 13 so that when the latter is onits set .K ot'jaws it will not interiore with the movement of the jaws lO/tor said ring l2., By arranging both sets of jaws concentrically and in line, a plurality ot work pieces may 1;, so that the rings l2--l3 may be slipped thereon, the stop shoulder ll serving to position the ring l2, the rin-g l2 in'turn serving to position the ring i3. -llhen these rings are thus positioned, the plunger l is moved so that the diaphragm may return toward its normal position, which tends to move the jaws in the direction to positively grip each ci the work pieces 12--18 with such firmness that they will not be shifted hy the action of a tool such as a grinding wheel on the tace ot the rings.. Fey providing a chuck construction oi:u this very simple character, a plurality ci work pieces may handled 1n one operation and the productive capacity ot a single machine correspondmgly increased.

l claim;

l. ln a chuck ci the character descril'fnadl anemie thereon ,the jaws ol one set being located between the jaws of the other set the jaws of one set beinef out awa to act reely ot one work piece, the jaws o away to act freely ot another work piece. Y7. ln a 'chuck ot the character described a head, a dexible diaphragm, a plurality ci sets of concentric chuck jaws mount/ed thereon at their inner endsy only for en aging a plurality of work ieces thereon en to end. 8. Aln a chuck ot the character described a head, a llerible diaphragm, a plurality ci sets ot concentric chuck jaws mountedthercon at their inner ends only for engaging a plurality of work pieces thereon, and a positioning shoulder for oneioi said work pieces.

9. ln a chuck oi the character described a head, a denible diaphragm, a plurality ci sets of concentric chuck jaws mounted thereon at their inner ends only for en aging a plurality of work pieces thereon en to end, and va positioning means tor thel end ot one oi said work pieces.

ernennen c. nrnwnnn a head,'a idekihle diaphragm, a plurality et sets ci concentric chuck jaws mounted thereon at their inner ends only lor engaging a plurality ot work pieces thereon,r

2. ln a chuck of the character described,

a head, a enible diaphragm, a plurality oi sets ci concentric chuck jaws mounted thereec on at their inner ends only for separately enge. g a plurality oi3 work pieces thereon.

il?. di? a chuck of the character described, a head, a flexible diaphragm; a` plurality o setsoif concentric chuck jaws mounted thereon at their inner ends only for engaging a plurality ci work pieces thereon, the jaws of one set being located between the jaws/oi? the other set. 7

l. ln a chuck of the character described, l

a head, a Hexible diaphragm, a plurality of jaws of the other set.

5. ln a chuck of the character described,

a head, a dexible diaphragm, a plurality of 5 sets of concentric chuck jaws mountedjthereon at their inner ends only i'or engaging a `GU plurality of work pieces thereon, and means to ilex said diaphragm. s

6. ln a chuck ot the character described, a head, a flexible diaphragm, a plurality ci sets of concentric chuck jaws mounted theref on for engaging a plurality of work pieces another set'heing` cut. 

